Paper-box-forming mechanism



.. euun H BRADY ET AL PAPER BOX FORMING MECHANISM.

March 24, 1925.

ire stares HENRY BRADY, or Broorarrnnn, Ann Ania W. ninsruenn, or cannon, new JERSEY,

Assreuons 'ro HENRY BRADY, rue, aconroearrou or new .i'sssnv;

rnrnn-nox-ronrrine MECHANISM."

Application filed June 30,

1 all whom it may concern:

lie it known that we, HENRY BRADY and Anna W. l'linsinonn, citizens of the United Q es, residing at Bloomfield and Orange, in the county of Essex and State of New o erscy, have invented certain new and useful improvements in Paper-Box-Forming lvilechanism, of which the following is a specification, reference being bad therein to the accompanying drawing.

Our invention relates to improvements in the manufacture of containers, and more particularly has reference to a machine adapted to form boxes out a sheet of heavy paper, such as card, and is in part a continuation of our previous patent applications serially numbered 184,202, and $337,802.

lleterring' to the accompanying drawing, we have illustrated in perspective, parts being broken away, a suitable form of forming device, cn'il'iodying an application of our ii1- \ention.

beam being; provided with a hole through which the shaft 1% passes. -16 indicate stops for coiled springs such as 17-l8 which cushion the lever 12 between said stops l5-16 while at the same time vertically reciprocating the shaft l l which carries the ejector 19 concentrically reciprocable withinthe female former 20 and its shaft or stem 21 which is held by the yoke 22 vertically slidable upon the standards or rods 23-23C This volze .22 is pivotally connected to the lever 24-, at the lower extremity Of which is a roller 25'engaging the cam 26 upon the shaft l.

The yoke 27 is driven by the rod 28 engaging the cam 29 upon the shaft 4 and operates the stitching; mechanism through the lever 30, pivoted at 31. Associated with this stitchii leech: "sin, however, is the corner mechanism or" the former 20 and indicates the driving chain upon the 1922. Serial No, 572,051.

33-33 pivoted upon the shaft 3 The outer end of the lever 30 is provided with rollers such as 35 which rldeupou the upper surface of the rods 32 as shown,

thereby oscillating the other extremities 33*33 and causing the hinged flaps Elli- 36 to operate against the springs mounted in the hinges thereof, which said springs tend to normally keep the flaps open, oneend of one of the springs being indicated by the reference character 37.

In the operation of the forming device, the two upper plungers 14-21 pass downwardly together, the plunger 14L pressing the blank upon the male die 9 while the plunger 21 further forms the blank, after which the corners are turned over by the hinged flaps 36-36 operated by the'levers 33-33, as aforesaid. Upon the return stroke of the plungers 1 l-2lthe plunger 21 moves first, leaving the plunger i l to clear the die 9 of the tay formed therein. This insures against any sticking oi the formed box with in the die. The several cams and connecting rods, it will be also observed, are more or. less duplicatedat opposite sides of the machine, thus producing a properly balanced structure, and the extent to which this feature of the inventionmay be carried out is more or less amatter of judgment in the design of any particular machine.

Of course it will be imdorstood that various modifications may be made in the constructionand arrangement oi. parts without departing.irom the spirit of the invention as claimed.

1. In combination with a blank forming device of the class described, arcade and re maledie for forming the blanks, a gripper rod normally retracted from one or said dies and guided through the centre of one part of the same to force a blank toward the other of said dies before said blank formed, means to reciprocate said rod, and

means external of said dies for folding the corners of said blank. '2. lncombinatlon with ablank forming device of the class described, a male and temale die for forming the blanks, a gripper rod normally retracted from one 0t said dies and guided through the centre of one part of the same to force a blank toward the other of said dies before said blank is formed, means to reciprocate said rod, and

means external of said dies for folding the corners of said blank, said means comprising flaps hinged at the beveled corners of said female die and oscillating fingers for laying said flaps over the corners of said blank. I

In testimony whereof We hereunto affix 0 our signatures.

HENRY BRADY. ADIN W. HILSINGER. 

